Information for Area Code: 773-xxx-xxxx - IL - ILLINOIS

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Information about Area Code 773

The telephone area code 773 was formed in the city of Chicago, Illinois, USA in 1996. The entire city of Chicago—and all of Chicagoland—were originally area code 312, but eventually the city itself was split between 312 in the Downtown/Loop and surrounding areas, and 773, comprising the vast physical majority of the city and all outlying areas within city limits.

While most large business and tourists identify with the 312 part of Chicago, the city as a whole is strongly identified by its diverse and vibrant neighborhoods, and most Chicago neighborhoods fall within the 773 area code. The area code has also been popularized by a series of t-shirts with the slogan "773 FOREVER", a reflection of residents' strong sense of pride and attachment to the area and their identification with urban living over the suburbs.[citation needed]

The inclusion of the 773 area code comes about because of the actions of the North American Numbering Plan Administration (NANPA) body that will be overseeing the creation of many new area codes in the coming years.[citation needed]

See also

State of Illinois area codes: 217, 224, 309, 312, 618, 630, 708, 773, 815, 847
North: 847/224
West: 630/708 area code 773 East: 312, Lake Michigan
South: 708



Flag of Illinois Illinois Area codes
217 | 224 | 309 | 312 | 618 | 630 | 708 | 773 | 779 | 815 | 847



Exchanges for Area Code 773-xxx-xxxx:

Exchange 773-200
-

Exchange 773-201
Chicago - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-202
CHICAGO - AMERITECH ILLINOIS

Exchange 773-203
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-204
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-205
CHICAGO - AMERITECH ILLINOIS

Exchange 773-206
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-207
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-208
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-209
Arlington Heights - SPRINT SPECTRUM L.P.

Exchange 773-210
Chicago - AMERITECH ILLINOIS

Exchange 773-211
-

Exchange 773-212
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-213
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-214
Chicago - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-215
Westchester - METROCALL

Exchange 773-216
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-218
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-220
Arlington Heights - SPRINT SPECTRUM L.P.

Exchange 773-221
CHICAGO - AMERITECH ILLINOIS

Exchange 773-222
Westchester - METROCALL

Exchange 773-223
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-224
CHICAGO - AMERITECH ILLINOIS

Exchange 773-225
Chicago -

Exchange 773-227
Chicago - AMERITECH ILLINOIS

Exchange 773-228
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-229
SUMMIT - AMERITECH ILLINOIS

Exchange 773-230
- AT&T WIRELESS SERVICES, INC.

Exchange 773-231
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-232
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-233
Chicago - AMERITECH ILLINOIS

Exchange 773-234
- SOURCE ONE WIRELESS

Exchange 773-235
Chicago - AMERITECH ILLINOIS

Exchange 773-236
- SOURCE ONE WIRELESS

Exchange 773-237
CHICAGO - AMERITECH ILLINOIS

Exchange 773-238
Chicago - AMERITECH ILLINOIS

Exchange 773-239
Chicago - AMERITECH ILLINOIS

Exchange 773-241
CHICAGO - AMERITECH ILLINOIS

Exchange 773-242
CICERO - AMERITECH ILLINOIS

Exchange 773-243
Wood Dale - XO ILLINOIS, INC.

Exchange 773-244
CHICAGO - AMERITECH ILLINOIS

Exchange 773-245
- SOURCE ONE WIRELESS

Exchange 773-246
La Grange - BEEPERMART, INC.

Exchange 773-247
CHICAGO - AMERITECH ILLINOIS

Exchange 773-248
Chicago - AMERITECH ILLINOIS

Exchange 773-249
Chicago - MCIMETRO, ATS, INC.

Exchange 773-250
Chicago - MCIMETRO, ATS, INC.

Exchange 773-251
- AT&T WIRELESS SERVICES, INC.

Exchange 773-252
Chicago - AMERITECH ILLINOIS

Exchange 773-253
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-254
CHICAGO - AMERITECH ILLINOIS

Exchange 773-255
- AT&T WIRELESS SERVICES, INC.

Exchange 773-256
CHICAGO - AMERITECH ILLINOIS

Exchange 773-257
CHICAGO - AMERITECH ILLINOIS

Exchange 773-258
Westchester - METROCALL

Exchange 773-259
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-260
Chicago - AMERITECH ILLINOIS

Exchange 773-261
CHICAGO - AMERITECH ILLINOIS

Exchange 773-262
Chicago - AMERITECH ILLINOIS

Exchange 773-263
Arlington Heights - SPRINT SPECTRUM L.P.

Exchange 773-264
Chicago - AMERITECH ILLINOIS

Exchange 773-265
CHICAGO - AMERITECH ILLINOIS

Exchange 773-266
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-267
CHICAGO - AMERITECH ILLINOIS

Exchange 773-268
Chicago - AMERITECH ILLINOIS

Exchange 773-269
Chicago - AT&T LOCAL

Exchange 773-271
Chicago - AMERITECH ILLINOIS

Exchange 773-272
Chicago - MCIMETRO, ATS, INC.

Exchange 773-273
EVANSTON - AMERITECH ILLINOIS

Exchange 773-274
Chicago - AMERITECH ILLINOIS

Exchange 773-275
Chicago - AMERITECH ILLINOIS

Exchange 773-276
Chicago - AMERITECH ILLINOIS

Exchange 773-277
CHICAGO - AMERITECH ILLINOIS

Exchange 773-278
Chicago - AMERITECH ILLINOIS

Exchange 773-279
CHICAGO - AMERITECH ILLINOIS

Exchange 773-280
- SOURCE ONE WIRELESS

Exchange 773-281
Chicago - AMERITECH ILLINOIS

Exchange 773-282
CHICAGO - AMERITECH ILLINOIS

Exchange 773-283
CHICAGO - AMERITECH ILLINOIS

Exchange 773-284
CHICAGO - AMERITECH ILLINOIS

Exchange 773-285
Chicago - AMERITECH ILLINOIS

Exchange 773-286
CHICAGO - AMERITECH ILLINOIS

Exchange 773-287
CHICAGO - AMERITECH ILLINOIS

Exchange 773-288
CHICAGO - AMERITECH ILLINOIS

Exchange 773-289
Chicago - MCIMETRO, ATS, INC.

Exchange 773-290
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 773-291
Chicago - AMERITECH ILLINOIS

Exchange 773-292
Chicago - AMERITECH ILLINOIS

Exchange 773-293
Chicago - AMERITECH ILLINOIS

Exchange 773-294
- AT&T WIRELESS SERVICES, INC.

Exchange 773-295
Chicago - MCIMETRO, ATS, INC.

Exchange 773-296
CHICAGO - AMERITECH ILLINOIS

Exchange 773-297
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-298
Chicago - AMERITECH ILLINOIS

Exchange 773-299
Chicago - MCIMETRO, ATS, INC.

Exchange 773-300
-

Exchange 773-301
Arlington Heights - SPRINT SPECTRUM L.P.

Exchange 773-303
Chicago - ALLEGIANCE TELECOM, INC. - IL

Exchange 773-304
Chicago - ALLEGIANCE TELECOM, INC. - IL

Exchange 773-305
Chicago - ALLEGIANCE TELECOM, INC. - IL

Exchange 773-306
Chicago - AT&T LOCAL

Exchange 773-307
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-308
Chicago - GLOBALCOM, INC.-IL

Exchange 773-309
- PAETEC COMMUNICATIONS, INC. - IL

Exchange 773-310
Schaumberg - UNITED STATES CELLULAR CORP.

Exchange 773-311
-

Exchange 773-313
- ALLEGIANCE TELECOM, INC. - IL

Exchange 773-314
- ALLEGIANCE TELECOM, INC. - IL

Exchange 773-315
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-316
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-317
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-318
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-319
Schaumberg - UNITED STATES CELLULAR CORP.

Exchange 773-320
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-321
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 773-322
Chicago - T-MOBILE USA, INC.

Exchange 773-323
BURR RIDGE - AMERITECH MOBILE SERVICES, INC.

Exchange 773-324
CHICAGO - AMERITECH ILLINOIS

Exchange 773-325
CHICAGO - AMERITECH ILLINOIS

Exchange 773-326
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 773-327
Chicago - AMERITECH ILLINOIS

Exchange 773-328
Chicago - GLOBALCOM, INC.-IL

Exchange 773-329
Chicago - AT&T LOCAL

Exchange 773-330
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-331
Elk Grove Village - INTERMEDIA COMMUNICATIONS INC. - IL

Exchange 773-332
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-333
BURR RIDGE - AMERITECH MOBILE SERVICES, INC.

Exchange 773-334
Chicago - AMERITECH ILLINOIS

Exchange 773-335
Chicago - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-336
Chicago - GLOBALCOM, INC.-IL

Exchange 773-337
- ALLEGIANCE TELECOM, INC. - IL

Exchange 773-338
Chicago - AMERITECH ILLINOIS

Exchange 773-339
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-341
Chicago - GLOBALCOM, INC.-IL

Exchange 773-342
Chicago - AMERITECH ILLINOIS

Exchange 773-343
Northbrook - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-344
Chicago - MCIMETRO, ATS, INC.

Exchange 773-345
Chicago - ALLEGIANCE TELECOM, INC. - IL

Exchange 773-346
Chicago - ALLEGIANCE TELECOM, INC. - IL

Exchange 773-347
Chicago - ALLEGIANCE TELECOM, INC. - IL

Exchange 773-348
Chicago - AMERITECH ILLINOIS

Exchange 773-349
Chicago - MCIMETRO, ATS, INC.

Exchange 773-350
Northbrook - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-351
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-352
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-353
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 773-354
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-355
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-356
CHICAGO - AMERITECH ILLINOIS

Exchange 773-357
Chicago - GLOBALCOM, INC.-IL

Exchange 773-358
Chicago - MCIMETRO, ATS, INC.

Exchange 773-359
Chicago - MCIMETRO, ATS, INC.

Exchange 773-360
Chicago - AT&T LOCAL

Exchange 773-361
CHICAGO - AMERITECH ILLINOIS

Exchange 773-362
Chicago - PAETEC COMMUNICATIONS, INC. - IL

Exchange 773-363
CHICAGO - AMERITECH ILLINOIS

Exchange 773-364
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-365
Chicago - ALLEGIANCE TELECOM, INC. - IL

Exchange 773-366
Chicago - T-MOBILE USA, INC.

Exchange 773-367
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-368
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-369
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-370
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-371
CHICAGO - AMERITECH ILLINOIS

Exchange 773-372
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-373
Chicago - AMERITECH ILLINOIS

Exchange 773-374
CHICAGO - AMERITECH ILLINOIS

Exchange 773-375
CHICAGO - AMERITECH ILLINOIS

Exchange 773-376
CHICAGO - AMERITECH ILLINOIS

Exchange 773-377
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-378
CHICAGO - AMERITECH ILLINOIS

Exchange 773-379
CHICAGO - AMERITECH ILLINOIS

Exchange 773-380
PARK RIDGE - AMERITECH ILLINOIS

Exchange 773-381
Chicago - AMERITECH ILLINOIS

Exchange 773-382
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-383
- AT&T WIRELESS SERVICES, INC.

Exchange 773-384
Chicago - AMERITECH ILLINOIS

Exchange 773-385
CHICAGO - AMERITECH ILLINOIS

Exchange 773-386
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-387
Chicago - T-MOBILE USA, INC.

Exchange 773-388
CHICAGO - AMERITECH ILLINOIS

Exchange 773-389
Chicago - ALLEGIANCE TELECOM, INC. - IL

Exchange 773-390
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-391
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-392
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-393
Westchester - METROCALL

Exchange 773-394
CHICAGO - AMERITECH ILLINOIS

Exchange 773-395
CHICAGO - AMERITECH ILLINOIS

Exchange 773-396
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-397
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-398
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-399
PARK RIDGE - AMERITECH ILLINOIS

Exchange 773-400
BURR RIDGE - AMERITECH MOBILE SERVICES, INC.

Exchange 773-401
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-402
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-403
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-404
CHICAGO - AMERITECH ILLINOIS

Exchange 773-405
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-406
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 773-407
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-408
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-409
Chicago - AT&T LOCAL

Exchange 773-410
Elmhurst - NEXTEL COMMUNICATIONS

Exchange 773-411
-

Exchange 773-412
Arlington Heights - SPRINT SPECTRUM L.P.

Exchange 773-413
Chicago - AT&T LOCAL

Exchange 773-414
Chicago - T-MOBILE USA, INC.

Exchange 773-415
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-416
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-417
- AT&T LOCAL

Exchange 773-418
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 773-419
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-420
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-421
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-422
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-423
- ALLEGIANCE TELECOM, INC. - IL

Exchange 773-424
Oak Brook - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-425
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-426
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-427
CHICAGO - AMERITECH ILLINOIS

Exchange 773-428
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-429
Chicago - AMERITECH ILLINOIS

Exchange 773-430
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-431
Chicago - HEARTLAND COMMUNICATIONS, INC.

Exchange 773-432
Chicago - CIMCO COMMUNICATIONS, INC. - IL

Exchange 773-433
Elmhurst - NEXTEL COMMUNICATIONS

Exchange 773-434
Chicago - AMERITECH ILLINOIS

Exchange 773-435
Wood Dale - XO ILLINOIS, INC.

Exchange 773-436
Chicago - AMERITECH ILLINOIS

Exchange 773-437
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-438
Westchester - METROCALL

Exchange 773-439
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 773-440
Schaumberg - UNITED STATES CELLULAR CORP.

Exchange 773-441
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-442
Elk Grove Village - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 773-443
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-444
PARK RIDGE - AMERITECH ILLINOIS

Exchange 773-445
Chicago - AMERITECH ILLINOIS

Exchange 773-446
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 773-447
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 773-448
Westchester - METROCALL

Exchange 773-449
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 773-450
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-451
Chicago - AMERITECH ILLINOIS

Exchange 773-452
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-453
Wood Dale - XO ILLINOIS, INC.

Exchange 773-454
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-455
Elk Grove Village - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 773-456
- AT&T WIRELESS SERVICES, INC.

Exchange 773-457
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 773-458
Elk Grove Village - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 773-459
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-460
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-461
Burr Ridge - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-462
CHICAGO - AMERITECH ILLINOIS

Exchange 773-463
CHICAGO - AMERITECH ILLINOIS

Exchange 773-464
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-465
Chicago - AMERITECH ILLINOIS

Exchange 773-466
Wood Dale - XO ILLINOIS, INC.

Exchange 773-467
CHICAGO - AMERITECH ILLINOIS

Exchange 773-468
Chicago - AMERITECH ILLINOIS

Exchange 773-469
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-470
Wood Dale - XO ILLINOIS, INC.

Exchange 773-471
Chicago - AMERITECH ILLINOIS

Exchange 773-472
Chicago - AMERITECH ILLINOIS

Exchange 773-473
CHICAGO - AMERITECH ILLINOIS

Exchange 773-474
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-475
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-476
Chicago - AMERITECH ILLINOIS

Exchange 773-477
CHICAGO - AMERITECH ILLINOIS

Exchange 773-478
CHICAGO - AMERITECH ILLINOIS

Exchange 773-479
CHICAGO - AMERITECH ILLINOIS

Exchange 773-480
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-481
CHICAGO - AMERITECH ILLINOIS

Exchange 773-482
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-483
CHICAGO - AMERITECH ILLINOIS

Exchange 773-484
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-485
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-486
Chicago - AMERITECH ILLINOIS

Exchange 773-487
CHICAGO - AMERITECH ILLINOIS

Exchange 773-488
Chicago - AMERITECH ILLINOIS

Exchange 773-489
Chicago - AMERITECH ILLINOIS

Exchange 773-490
Schaumburg - AT&T WIRELESS SERVICES, INC.

Exchange 773-491
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 773-492
Westchester - METROCALL

Exchange 773-493
CHICAGO - AMERITECH ILLINOIS

Exchange 773-494
Elmhurst - NEXTEL BOOST INVESTMENT, INC.

Exchange 773-495
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-496
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-497
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-498
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-499
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-500
-

Exchange 773-501
Chicago - T-MOBILE USA, INC.

Exchange 773-502
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-503
Chicago - T-MOBILE USA, INC.

Exchange 773-504
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-505
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-506
Chicago - AMERITECH ILLINOIS

Exchange 773-507
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-508
Chicago - AMERITECH ILLINOIS

Exchange 773-509
CHICAGO - AMERITECH ILLINOIS

Exchange 773-510
Chicago - T-MOBILE USA, INC.

Exchange 773-511
-

Exchange 773-512
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-513
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-514
BURR RIDGE - AMERITECH MOBILE SERVICES, INC.

Exchange 773-515
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-516
Chicago - NEUTRAL TANDEM-ILLINOIS, LLC - IL

Exchange 773-517
Chicago - T-MOBILE USA, INC.

Exchange 773-518
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-519
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-520
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-521
CHICAGO - AMERITECH ILLINOIS

Exchange 773-522
CHICAGO - AMERITECH ILLINOIS

Exchange 773-523
CHICAGO - AMERITECH ILLINOIS

Exchange 773-524
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 773-525
Chicago - AMERITECH ILLINOIS

Exchange 773-526
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-527
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 773-528
CHICAGO - AMERITECH ILLINOIS

Exchange 773-529
CHICAGO - AMERITECH ILLINOIS

Exchange 773-530
- COMCAST PHONE OF ILLINOIS, LLC - IL

Exchange 773-531
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-532
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-533
CHICAGO - AMERITECH ILLINOIS

Exchange 773-534
CHICAGO - AMERITECH ILLINOIS

Exchange 773-535
CHICAGO - AMERITECH ILLINOIS

Exchange 773-536
Chicago - AMERITECH ILLINOIS

Exchange 773-537
Chicago - CIMCO COMMUNICATIONS, INC. - IL

Exchange 773-538
Chicago - AMERITECH ILLINOIS

Exchange 773-539
CHICAGO - AMERITECH ILLINOIS

Exchange 773-540
Chicago - T-MOBILE USA, INC.

Exchange 773-541
Chicago - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-542
CHICAGO - AMERITECH ILLINOIS

Exchange 773-544
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-545
CHICAGO - AMERITECH ILLINOIS

Exchange 773-546
Chicago - AMERITECH ILLINOIS

Exchange 773-547
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-548
Chicago - AMERITECH ILLINOIS

Exchange 773-549
Chicago - AMERITECH ILLINOIS

Exchange 773-550
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-551
- AT&T WIRELESS SERVICES, INC.

Exchange 773-552
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-553
CHICAGO - AMERITECH ILLINOIS

Exchange 773-554
-

Exchange 773-555
Chicago - AMERITECH ILLINOIS

Exchange 773-556
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-557
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-558
Hickory Hills - COMCAST PHONE OF ILLINOIS, LLC - IL

Exchange 773-559
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-560
Chicago - ARCH WIRELESS HOLDINGS, INC.

Exchange 773-561
Chicago - AMERITECH ILLINOIS

Exchange 773-562
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-563
Schaumberg -

Exchange 773-564
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-565
Chicago - CIMCO COMMUNICATIONS, INC. - IL

Exchange 773-566
Westchester - METROCALL

Exchange 773-567
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-568
Chicago - AMERITECH ILLINOIS

Exchange 773-569
ELK GROVE VILLAGE - AMERITECH ILLINOIS

Exchange 773-570
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 773-571
Hickory Hills -

Exchange 773-572
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 773-573
Chicago - XO ILLINOIS, INC.

Exchange 773-574
Chicago -

Exchange 773-575
Schaumburg - AT&T WIRELESS SERVICES, INC.

Exchange 773-576
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-577
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-578
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-579
CHICAGO - AMERITECH ILLINOIS

Exchange 773-580
Schaumburg - AT&T WIRELESS SERVICES, INC.

Exchange 773-581
CHICAGO - AMERITECH ILLINOIS

Exchange 773-582
CHICAGO - AMERITECH ILLINOIS

Exchange 773-583
CHICAGO - AMERITECH ILLINOIS

Exchange 773-584
Elk Grove Village - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 773-585
CHICAGO - AMERITECH ILLINOIS

Exchange 773-586
SUMMIT - AMERITECH ILLINOIS

Exchange 773-587
Bridgeview - METROCALL

Exchange 773-588
CHICAGO - AMERITECH ILLINOIS

Exchange 773-589
RIVER GROVE - AMERITECH ILLINOIS

Exchange 773-590
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-591
Chicago - AMERITECH ILLINOIS

Exchange 773-592
Chicago - T-MOBILE USA, INC.

Exchange 773-593
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-594
CHICAGO - AMERITECH ILLINOIS

Exchange 773-595
Chicago -

Exchange 773-596
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-597
Chicago - CIMCO COMMUNICATIONS, INC. - IL

Exchange 773-598
Elk Grove Village - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 773-600
Chicago - T-MOBILE USA, INC.

Exchange 773-601
CHICAGO - AMERITECH ILLINOIS

Exchange 773-602
CHICAGO - AMERITECH ILLINOIS

Exchange 773-603
Chicago - T-MOBILE USA, INC.

Exchange 773-604
CHICAGO - AMERITECH ILLINOIS

Exchange 773-605
Chicago -

Exchange 773-606
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-607
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-608
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-610
- AT&T WIRELESS SERVICES, INC.

Exchange 773-611
-

Exchange 773-612
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-613
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-614
Chicago -

Exchange 773-615
Schaumberg - UNITED STATES CELLULAR CORP.

Exchange 773-616
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-617
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 773-618
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-619
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 773-620
Schaumburg - AT&T WIRELESS SERVICES, INC.

Exchange 773-621
Bridgeview -

Exchange 773-622
CHICAGO - AMERITECH ILLINOIS

Exchange 773-623
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-624
Chicago - AMERITECH ILLINOIS

Exchange 773-625
RIVER GROVE - AMERITECH ILLINOIS

Exchange 773-626
CHICAGO - AMERITECH ILLINOIS

Exchange 773-627
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-628
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-629
Chicago -

Exchange 773-631
CHICAGO - AMERITECH ILLINOIS

Exchange 773-632
Elk Grove Village - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 773-633
Hickory Hills - INTERMEDIA COMMUNICATIONS INC. - IL

Exchange 773-634
Elk Grove Village - INTERMEDIA COMMUNICATIONS INC. - IL

Exchange 773-635
Northbrook - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-636
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-637
CHICAGO - AMERITECH ILLINOIS

Exchange 773-638
CHICAGO - AMERITECH ILLINOIS

Exchange 773-640
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-641
Elmhurst - NEXTEL BOOST INVESTMENT, INC.

Exchange 773-642
Bridgeview -

Exchange 773-643
CHICAGO - AMERITECH ILLINOIS

Exchange 773-644
Chicago - AIR FREE PAGING

Exchange 773-645
CHICAGO - AMERITECH ILLINOIS

Exchange 773-646
CHICAGO - AMERITECH ILLINOIS

Exchange 773-648
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-649
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-650
CHICAGO - AMERITECH ILLINOIS

Exchange 773-651
Chicago - AMERITECH ILLINOIS

Exchange 773-652
Westchester - METROCALL

Exchange 773-653
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-654
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-655
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-656
Chicago - T-MOBILE USA, INC.

Exchange 773-657
Lombard -

Exchange 773-658
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-659
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-660
Chicago - AMERITECH ILLINOIS

Exchange 773-661
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-662
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-663
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-664
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-665
CHICAGO - AMERITECH ILLINOIS

Exchange 773-667
CHICAGO - AMERITECH ILLINOIS

Exchange 773-668
-

Exchange 773-670
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-671
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-672
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-673
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-674
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-675
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-676
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-677
- AT&T WIRELESS SERVICES, INC.

Exchange 773-678
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-679
Chicago -

Exchange 773-680
Schaumburg - AT&T WIRELESS SERVICES, INC.

Exchange 773-681
Bensenville - MCIMETRO, ATS, INC.

Exchange 773-682
Hickory Hills -

Exchange 773-683
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-684
CHICAGO - AMERITECH ILLINOIS

Exchange 773-685
CHICAGO - AMERITECH ILLINOIS

Exchange 773-686
CHICAGO - AMERITECH ILLINOIS

Exchange 773-687
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-688
La Grange - SPRINT COMMUNICATIONS COMPANY, L.P. - IL

Exchange 773-689
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-691
Chicago -

Exchange 773-692
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-693
PARK RIDGE - AMERITECH ILLINOIS

Exchange 773-694
DES PLAINES - AMERITECH ILLINOIS

Exchange 773-695
PARK RIDGE - AMERITECH ILLINOIS

Exchange 773-696
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-697
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-698
Chicago -

Exchange 773-699
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-700
-

Exchange 773-701
Chicago -

Exchange 773-702
CHICAGO - AMERITECH ILLINOIS

Exchange 773-704
Chicago - T-MOBILE USA, INC.

Exchange 773-705
Chicago -

Exchange 773-706
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-710
- AT&T WIRELESS SERVICES, INC.

Exchange 773-711
-

Exchange 773-713
BURR RIDGE - AMERITECH MOBILE SERVICES, INC.

Exchange 773-714
PARK RIDGE - AMERITECH ILLINOIS

Exchange 773-715
Chicago - T-MOBILE USA, INC.

Exchange 773-716
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-718
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-719
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-720
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-721
CHICAGO - AMERITECH ILLINOIS

Exchange 773-722
CHICAGO - AMERITECH ILLINOIS

Exchange 773-723
Chicago - AMERITECH ILLINOIS

Exchange 773-724
Hickory Hills -

Exchange 773-725
CHICAGO - AMERITECH ILLINOIS

Exchange 773-726
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-727
Chicago - T-MOBILE USA, INC.

Exchange 773-728
Chicago - AMERITECH ILLINOIS

Exchange 773-729
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-730
CHICAGO - AMERITECH ILLINOIS

Exchange 773-731
CHICAGO - AMERITECH ILLINOIS

Exchange 773-732
Chicago - T-MOBILE USA, INC.

Exchange 773-733
Chicago - OVATION COMMUNICATIONS OF ILLINOIS, INC.

Exchange 773-734
CHICAGO - AMERITECH ILLINOIS

Exchange 773-735
CHICAGO - AMERITECH ILLINOIS

Exchange 773-736
CHICAGO - AMERITECH ILLINOIS

Exchange 773-737
Chicago - AMERITECH ILLINOIS

Exchange 773-739
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-740
BURR RIDGE - AMERITECH MOBILE SERVICES, INC.

Exchange 773-741
DES PLAINES - AMERITECH ILLINOIS

Exchange 773-742
Chicago - T-MOBILE USA, INC.

Exchange 773-743
Chicago - AMERITECH ILLINOIS

Exchange 773-744
Chicago - T-MOBILE USA, INC.

Exchange 773-745
CHICAGO - AMERITECH ILLINOIS

Exchange 773-746
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-748
La Grange - BEEPERMART, INC.

Exchange 773-749
Bridgeview -

Exchange 773-750
- AT&T WIRELESS SERVICES, INC.

Exchange 773-751
Wood Dale - XO ILLINOIS, INC.

Exchange 773-752
CHICAGO - AMERITECH ILLINOIS

Exchange 773-753
CHICAGO - AMERITECH ILLINOIS

Exchange 773-754
-

Exchange 773-755
CHICAGO - AMERITECH ILLINOIS

Exchange 773-756
Bensenville - MCIMETRO, ATS, INC.

Exchange 773-757
Oak Brook - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-758
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-759
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-760
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-761
Chicago - AMERITECH ILLINOIS

Exchange 773-762
CHICAGO - AMERITECH ILLINOIS

Exchange 773-763
CHICAGO - AMERITECH ILLINOIS

Exchange 773-764
Chicago - AMERITECH ILLINOIS

Exchange 773-765
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-767
CHICAGO - AMERITECH ILLINOIS

Exchange 773-768
CHICAGO - AMERITECH ILLINOIS

Exchange 773-769
Chicago - AMERITECH ILLINOIS

Exchange 773-770
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-771
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-772
Chicago - AMERITECH ILLINOIS

Exchange 773-774
CHICAGO - AMERITECH ILLINOIS

Exchange 773-775
CHICAGO - AMERITECH ILLINOIS

Exchange 773-776
Chicago - AMERITECH ILLINOIS

Exchange 773-777
CHICAGO - AMERITECH ILLINOIS

Exchange 773-778
Chicago - AMERITECH ILLINOIS

Exchange 773-779
Chicago - AMERITECH ILLINOIS

Exchange 773-780
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-781
- AIRTOUCH PAGING - ILLINOIS

Exchange 773-782
CHICAGO - AMERITECH ILLINOIS

Exchange 773-783
Chicago - AMERITECH ILLINOIS

Exchange 773-784
Chicago - AMERITECH ILLINOIS

Exchange 773-785
Chicago - AMERITECH ILLINOIS

Exchange 773-786
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-787
Wood Dale - XO ILLINOIS, INC.

Exchange 773-788
SUMMIT - AMERITECH ILLINOIS

Exchange 773-789
-

Exchange 773-790
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 773-791
- AT&T WIRELESS SERVICES, INC.

Exchange 773-792
CHICAGO - AMERITECH ILLINOIS

Exchange 773-793
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-794
CHICAGO - AMERITECH ILLINOIS

Exchange 773-795
CHICAGO - AMERITECH ILLINOIS

Exchange 773-796
Chicago - AMERITECH ILLINOIS

Exchange 773-797
Arlington Heights - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 773-798
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-799
Bensenville - MCIMETRO, ATS, INC.

Exchange 773-801
CHICAGO -

Exchange 773-802
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-803
Bridgeview -

Exchange 773-804
CHICAGO - AMERITECH ILLINOIS

Exchange 773-805
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-806
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-807
Chicago - T-MOBILE USA, INC.

Exchange 773-808
Buffalo Grove -

Exchange 773-810
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-811
-

Exchange 773-813
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-814
Chicago - T-MOBILE USA, INC.

Exchange 773-816
- T-MOBILE USA, INC.

Exchange 773-817
Chicago - T-MOBILE USA, INC.

Exchange 773-818
Chicago - T-MOBILE USA, INC.

Exchange 773-820
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-821
Chicago - AMERITECH ILLINOIS

Exchange 773-822
Chicago - T-MOBILE USA, INC.

Exchange 773-823
Chicago - AT&T LOCAL

Exchange 773-824
Chicago - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-825
DES PLAINES - AMERITECH ILLINOIS

Exchange 773-826
CHICAGO - AMERITECH ILLINOIS

Exchange 773-827
Chicago - T-MOBILE USA, INC.

Exchange 773-828
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 773-829
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 773-830
Wood Dale - XO ILLINOIS, INC.

Exchange 773-831
Chicago - LEVEL 3 COMMUNICATIONS, LLC - IL

Exchange 773-832
CHICAGO - AMERITECH ILLINOIS

Exchange 773-833
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-834
CHICAGO - TELEPORT COMMUNICATIONS GROUP - CHICAGO

Exchange 773-835
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-836
CHICAGO - AMERITECH ILLINOIS

Exchange 773-837
Chicago - T-MOBILE USA, INC.

Exchange 773-838
CHICAGO - AMERITECH ILLINOIS

Exchange 773-839
BURR RIDGE - AMERITECH MOBILE SERVICES, INC.

Exchange 773-840
-

Exchange 773-841
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-842
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 773-843
CHICAGO - AMERITECH ILLINOIS

Exchange 773-844
- AT&T WIRELESS SERVICES, INC.

Exchange 773-845
- AIRTOUCH PAGING - ILLINOIS

Exchange 773-846
Chicago - AMERITECH ILLINOIS

Exchange 773-847
CHICAGO - AMERITECH ILLINOIS

Exchange 773-848
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-849
Hickory Hills -

Exchange 773-850
- HEARTLAND COMMUNICATIONS, INC.

Exchange 773-851
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 773-852
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-853
Bridgeview -

Exchange 773-854
CHICAGO - AMERITECH ILLINOIS

Exchange 773-855
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 773-856
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 773-857
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 773-858
Oak Brook - NEXTEL COMMUNICATIONS

Exchange 773-859
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-860
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-861
Chicago -

Exchange 773-862
CHICAGO - AMERITECH ILLINOIS

Exchange 773-863
Chicago - AMERITECH ILLINOIS

Exchange 773-864
PARK RIDGE - AMERITECH ILLINOIS

Exchange 773-865
Chicago - T-MOBILE USA, INC.

Exchange 773-866
CHICAGO - AMERITECH ILLINOIS

Exchange 773-867
PARK RIDGE - AMERITECH ILLINOIS

Exchange 773-868
Chicago - AMERITECH ILLINOIS

Exchange 773-869
CHICAGO - AMERITECH ILLINOIS

Exchange 773-870
- AT&T WIRELESS SERVICES, INC.

Exchange 773-871
CHICAGO - AMERITECH ILLINOIS

Exchange 773-872
-

Exchange 773-873
CHICAGO - AMERITECH ILLINOIS

Exchange 773-874
Chicago - AMERITECH ILLINOIS

Exchange 773-875
Chicago - T-MOBILE USA, INC.

Exchange 773-876
Lombard -

Exchange 773-877
Chicago -

Exchange 773-878
Chicago - AMERITECH ILLINOIS

Exchange 773-879
Lombard - UNITED STATES CELLULAR CORP.

Exchange 773-880
Chicago - AMERITECH ILLINOIS

Exchange 773-881
Chicago - AMERITECH ILLINOIS

Exchange 773-882
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-883
Chicago - AMERITECH ILLINOIS

Exchange 773-884
CHICAGO - AMERITECH ILLINOIS

Exchange 773-885
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-886
Chicago -

Exchange 773-887
Bensenville - MCIMETRO, ATS, INC.

Exchange 773-889
CHICAGO - AMERITECH ILLINOIS

Exchange 773-890
CHICAGO - AMERITECH ILLINOIS

Exchange 773-891
-

Exchange 773-892
CHICAGO - AMERITECH ILLINOIS

Exchange 773-893
Bensenville - MCIMETRO, ATS, INC.

Exchange 773-894
CHICAGO - AMERITECH ILLINOIS

Exchange 773-895
Chicago - T-MOBILE USA, INC.

Exchange 773-896
Bensenville - MCIMETRO, ATS, INC.

Exchange 773-898
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-899
Hickory Hills -

Exchange 773-900
-

Exchange 773-902
Chicago - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-903
BURR RIDGE - AMERITECH MOBILE SERVICES, INC.

Exchange 773-905
Chicago - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-906
Chicago - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-907
Chicago - AMERITECH ILLINOIS

Exchange 773-908
Buffalo Grove - NEXTEL COMMUNICATIONS

Exchange 773-909
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-910
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-911
-

Exchange 773-912
Chicago - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-913
Chicago - FOCAL COMMUNICATIONS CORP OF ILLINOIS

Exchange 773-914
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-915
Chicago - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-917
Elk Grove Village - MCI WORLDCOM COMMUNICATIONS, INC. - IL

Exchange 773-918
Chicago - AMERITECH ILLINOIS

Exchange 773-919
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-920
Chicago - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-921
CHICAGO - AMERITECH ILLINOIS

Exchange 773-922
Chicago - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-923
Westchester - METROCALL

Exchange 773-924
Chicago - AMERITECH ILLINOIS

Exchange 773-925
Chicago - AMERITECH ILLINOIS

Exchange 773-926
CHICAGO - AMERITECH ILLINOIS

Exchange 773-927
CHICAGO - AMERITECH ILLINOIS

Exchange 773-928
Chicago - AMERITECH ILLINOIS

Exchange 773-929
CHICAGO - AMERITECH ILLINOIS

Exchange 773-930
Bridgeview -

Exchange 773-931
Chicago - T-MOBILE USA, INC.

Exchange 773-932
Chicago - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-933
CHICAGO - AMERITECH ILLINOIS

Exchange 773-934
Chicago - T-MOBILE USA, INC.

Exchange 773-935
Chicago - AMERITECH ILLINOIS

Exchange 773-936
Chicago - T-MOBILE USA, INC.

Exchange 773-937
La Grange -

Exchange 773-938
Chicago - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-939
Chicago -

Exchange 773-942
Chicago - GLOBAL CROSSING LOCAL SERVICES, INC.-IL

Exchange 773-944
Chicago - RCN TELECOM SERVICES OF ILLINOIS, INC. - IL

Exchange 773-946
Arlington Heights -

Exchange 773-947
CHICAGO - AMERITECH ILLINOIS

Exchange 773-948
Bensenville - MCIMETRO, ATS, INC.

Exchange 773-949
Chicago - CELLULAR PAGING USA, INC.

Exchange 773-950
-

Exchange 773-951
Hickory Hills -

Exchange 773-952
Chicago -

Exchange 773-954
Chicago -

Exchange 773-955
CHICAGO - AMERITECH ILLINOIS

Exchange 773-957
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-958
-

Exchange 773-959
-

Exchange 773-960
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-961
CHICAGO - AMERITECH ILLINOIS

Exchange 773-962
Chicago - AMERITECH ILLINOIS

Exchange 773-963
Bridgeview -

Exchange 773-965
Hickory Hills - CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL

Exchange 773-966
-

Exchange 773-967
Bensenville - MCIMETRO, ATS, INC.

Exchange 773-968
Chicago - T-MOBILE USA, INC.

Exchange 773-971
Chicago -

Exchange 773-972
- SOUTHWESTERN BELL MOBILE SYSTEMS, LLC - IL

Exchange 773-973
Chicago - AMERITECH ILLINOIS

Exchange 773-974
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-975
Chicago - AMERITECH ILLINOIS

Exchange 773-976
-

Exchange 773-977
Wheeling - MPOWER COMMUNICATIONS CORP - IL

Exchange 773-978
CHICAGO - AMERITECH ILLINOIS

Exchange 773-979
Schaumberg -

Exchange 773-981
Bensenville - MCIMETRO, ATS, INC.

Exchange 773-983
Chicago - T-MOBILE USA, INC.

Exchange 773-984
Bridgeview -

Exchange 773-985
Bensenville - MCIMETRO, ATS, INC.

Exchange 773-987
Chicago - GLOBALCOM, INC.-IL

Exchange 773-988
Chicago - T-MOBILE USA, INC.

Exchange 773-989
Chicago - AMERITECH ILLINOIS

Exchange 773-990
CHICAGO -

Exchange 773-991
Bridgeview - SPRINT SPECTRUM L.P.

Exchange 773-992
SCHILLER PARK - AMERITECH ILLINOIS

Exchange 773-993
Addison - MULTI COMPUTER SYSTEMS, INC.

Exchange 773-994
Chicago - AMERITECH ILLINOIS

Exchange 773-995
Chicago - AMERITECH ILLINOIS